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in 1872 3 scientists dug to the earths core and implanted an electro magnet more powerful than an atomic bomb. The government kept all this secret so that no one could disrupt the magnet's current.
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What is the center layer of earth called?
The very center of the Earth consists of the solid inner core (Ni-Fe alloy) and the liquid outer core (Ni, Fe) that spins and as a giant dynamo gives rise to the existence of the Earth magnetic field.
What is the procedure to draw magnetic field lines?
If it is a small magnet, like one that you can hold in your hand, place the magnet on a flat surface, put a white sheet of paper over it, take iron shavings or shavings from a magnetic metal, and sprinkle them on the paper. Gently shake the paper if you have to. You should start to see lines from where the magnetic fields attracted the metal.
Why do the earth have a magnetic field?
An excerpt from a paper by D.R. Fearn: The problem of magnetic field stability is complementary to the (much more widely studied) kinematic dynamo problem The dynamo mechanism converts the mechanical energy of convection into magnetic energy. If the field generated is unstable then the instability extracts energy from the field and might be expected to limit the strength of field attainable. This is an important consideration since the toroidal part of the field in the Earth's core is shielded from us by the insulating mantle and we do not know its strength. [Measurements of the DC electrical potential near the top of the mantle have been extrapolated downward to estimate the toroidal field at the core-mantle boundary (CMB), ...). This gives a toroidal field strength of a few gauss ( at the CMB), but with a weakly conducting mantle, a low value is to be expected and this result is not inconsistent with a strong toroidal field in the interior of the core (...)] There are good reasons for believing the toroidal field may be significantly stronger than the observed (poloidal) part of the field. If so, theoretical considerations may be the only way we have of determining the strength of the major component of the field. Linear theory (...) has shown that a broad class of fields, characteristic of the Earth's field, are unstable when their maximum strength exceeds a value of the order of 60 gauss which is a factor 10 greater than the observed poloidal field but is in line with many estimates of the hidden toroidal field. (...) To explain the observed features of the geomagnetic field, it is clearly important to understand how a magnetic instability evolves. Link below.
What does the flow of electrons make?
The flow of electricity, which is a current of electrons, or simply electron flow, creates a magnetic field around its path of travel. This is a fundamental property of charged particles. Magnetic fields are always present in the vicinity of moving charges, and moving charges always create magnetic fields. One of the four fundamental forces we know in nature is the electromagnetic force. And this is probably one of the best examples of the inseparability of current flow and a magnetic field.
Why 2 magnetic fields cannot cross each other?
the tangent at any point on an electric field line gives the direction of the field at that point . so if field lines intersect then electric field at will have more than1 direction which is impossible
What gives rise to the Earths magnetic field?
Current flows inside he Earth.
Do force-field exist?
Yes. There is only one problem. Its just that it is 1cm cubed. Very tiny. And obviously, the mathematical one which gives of a magnetic force field exists.
What is the force exerted on objects by the earths pull?
There is both gravitational and magnetic force associated with the earth. The mass of the earth gives rise to gravity, and magneto action in the core generates the magnetic field that moves compass needles.
Earth revoles on its axis true or false?
Yes, it does though it wobbles a bit. This gives us seasons and the magnetic field that a compass detects.
What metal lies inside the Earth's core which gives the Earth its magnetic field?
The Earth's magnetic field is the result of electric currents in the liquid metal outer core.The outer core of the Earth is over 2,000 km thick. It sits above the solid inner core and is composed of highly conducting liquid iron and nickel. Above the outer core is the Earth's mantle.The geodynamo is the mechanism thought to be responsible for the generation of the Earth's magnetic field through the convection of conducting fluids in the Earth's core. Other planets with a molten metal core can also have a magnetic field.See related links.
What part of an object is a measure of the force of gravity between earth and the object?
The object has mass, and the force of gravity gives that object weight, which is mass in a gravimetric field.
A loop of wire is placed in a uniform magnetic field.In which orientation of the loop is the magnetic flux linked with it maximum?
1. The orientation giving the maximum magnetic flux would be 90 degrees or perpendicular to the magnetic field because that gives the maximum amount of magnetic field lines able to pass through the area of the coil. The greater density of field lines gives a greater magnetic field. The orientation that would give a magnetic flux of zero is the plane of the coil to be parallel to the magnetic field, making no lines pass through the coil and thus no flux.
What is belived to be responsible for the earth's magnetic field?
The earth's magnetic field arises from the core of the earth(that we know) but why? Have you ever heard of lodestones? Well they are naturally occurring magnets. They are basically composed of ferromagnetic materials like iron. Their magnetic property arises because the iron stays aligned with the magnetic field lines of the earth leading to a change in the arrangement of their electrons. But our discussion is for the origin of earth's magnetism. Well the core of the earth is composed of materials like Nickel and Iron, hence the core is sometimes called NiFe. Due to hot temperatures and pressure the electrons in the core are constantly changing positions and hence giving out a magnetic flux. The flux density is what gives the field.
What is a magnetic field and how does it work?
Magnetic field is produced by varying electic field. It is a vector quantity. It originates from North pole and passes to south pole and it is a closed loop.Magnetic forces gives information about charge carriers in a material through Hall effectansw2. A magnetic field may be a fixed one - it does not need to vary. Consider a permanent magnet.All magnetic fields are caused by the movement of electrons. No moving electrons - no magnetic field.The Earth's magnetic field is created by electrical currents, running roughly parallel with the equator. There may be several such paths - we see the net effect.
What is a magnetic field and what it does?
Magnetic field is produced by varying electic field. It is a vector quantity. It originates from North pole and passes to south pole and it is a closed loop.Magnetic forces gives information about charge carriers in a material through Hall effectansw2. A magnetic field may be a fixed one - it does not need to vary. Consider a permanent magnet.All magnetic fields are caused by the movement of electrons. No moving electrons - no magnetic field.The Earth's magnetic field is created by electrical currents, running roughly parallel with the equator. There may be several such paths - we see the net effect.
What happen when a current carrying conductor is placed in a magnetic field?
A force will be applied to the conductor. This is the operating principle of the motor.When a current carrying conducter is placed in magnetic field it experiences a force.Reason :- Force(F') on a charged particle(q) moving with velocity v' due to magnetic field(B') around it isF' = q (v'xB') where F', v', B' are vectorsand v'xB' is vector product or cross product which also gives the direction of this Force vector F'.Current, as we know, is caused due to motion of electrons. So, when a current carrying conductor is placed in magnetic field, these moving electrons experience force and so does the Conductor too.If the force on electrons is summed up or integrated over the entire length(L) of a straight conductor. We will end up withF = BIL where I is the current. Direction of this force is determined by cross product of direction of current and Magnetic Field.
What is the classical explanation of a dc electric current in a metallic wave?
A changing magnetic field always produces an electric field, and conversely, a changing electric field always produces a magnetic field. This interaction of electric and magnetic forces gives rise to a condition in space known as an electromagnetic field.
